Correct

不识好歹

/ bù shí hǎo dǎi /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/不识好歹-Chinese-idioms-Cchatty-78c5c707-b301-4a66-a2e4-14b6ead75f54-1612776262.jpg

Collocation

1
不识好歹的人
2
这么不识好歹
3
太不识好歹了
4
真是不识好歹

Definition

不识好歹:

Literally means:

cannot tell good from bad

Actually means:

识, know. 歹, evil. It means failing to distinguish good and bad or to understand somebody else's good intention.

It is often used to scold a person who does not acknowledge others'favor. Derogatory.

识,知道。歹,坏。不识好歹,分辨不出好和坏,不懂别人的好意。

常用来指责对别人的好意不领情的人。具有贬义色彩。

Example

Used as predicate or attributive. (作谓语、定语)
1
Rénjiā
人家
qǐng
dāng
píngwěi
评委
  
,
shì
kànde
看得起
  
,
yǒu
有意
bāng
chūmíng
出名
  
,
què
shíhǎodǎi
不识好歹
  
,
kǒu
huíjué
回绝
le
  
,
zhēnshi
真是
shūdāizi
书呆子
  

People ask you to be a judge, is to see you, intend to help you become famous, you do not know good, a rebuff, really a nerd.

2
de
qiánbāo
钱包
diào
zài
shang
地上
  
,
pángbiān
旁边
de
xiǎohuǒzi
小伙子
bāng
shè
lai
起来
  
,
dàn
不但
biǎoshì
表示
gǎnxiè
感谢
  
,
fǎnér
反而
guài
rénjiā
人家
duōguǎnxiánshì
多管闲事
  
,
zhēnshi
真是
shíhǎodǎi
不识好歹
  
!

Her purse fell to the ground, next to a young man to help her pick up, she not only did not thank, but blame people more care, really do not know how good!

3
Xiǎowáng
小王
shì
shíhǎodǎi
不识好歹
de
jiāhuo
家伙
  
,
biéren
别人
hǎoxīn
好心
bāng
zhǐchū
指出
zuò
作业
zhōng
de
cuò
错误
  
,
què
wéi
以为
biéren
别人
shì
zài
cháoxiào
嘲笑
  

Xiao Wang is a guy who doesn't know what to do, and others are kind enough to help him point out mistakes in his homework, but he thinks others are laughing at him.